When shooting suppressed in .300 Blackout, the ammunition you run matters just as much as the can on the end of your barrel. The Magtech .300 Blackout 200gr 1017fps FMJ Subsonic Centrefire Ammo - 50 Rounds is purpose-built to stay well below the speed of sound, clocking in at 1,017fps from a 40.6cm test barrel - comfortably under the approximately 1,125fps threshold where the supersonic crack kicks in. That means when paired with a quality suppressor, you're getting the full acoustic benefit the setup is capable of delivering, without the sharp report that standard velocity loads produce. Whether you're running a suppressed rifle for pest control, or putting rounds through a suppressed .300 Blackout platform at the range, this load from Magtech is a serious, well-engineered option backed by strict quality control.

Magtech .300 Blackout 200gr 1017fps FMJ Subsonic Centrefire Ammo - 50 Rounds Key Features

• Calibre and Load: Chambered in .300 Blackout with a 200gr Flat Full Metal Jacket projectile - heavy for calibre, which is exactly what a subsonic load needs to maintain adequate energy downrange while staying below the sound barrier.
• Muzzle Velocity: 1,017fps (310m/s) from a 40.6cm test barrel, reliably subsonic and designed to remain that way across normal shooting conditions.
• Muzzle Energy: 459ft-lbs (622J) at the muzzle, delivering meaningful terminal performance for a subsonic projectile.
• Ballistic Coefficient: G1 BC of 0.56, which is solid for a flat FMJ projectile of this weight class and contributes to consistent flight and predictable performance at range.
• Suppressor Optimised: Engineered specifically for use in suppressed firearms. By eliminating the supersonic crack, this load lets your suppressor do its job properly, delivering a dramatically quieter shooting experience compared to standard velocity .300 Blackout loads.
• Reliable Feeding and Cycling: The flat FMJ profile and consistent case dimensions are designed to feed reliably from magazine to chamber and cycle dependably through suppressed platforms where back-pressure dynamics can sometimes cause issues with standard loads.
• Reloadable Brass Cases: Quality brass casings with consistent dimensions allow for reliable extraction and are fully reloadable for those who handload.
• Primer: Small Rifle Primer 7½, a common and well-regarded primer choice for .300 Blackout delivering consistent ignition and pressure curve.
• Clean-Burning Propellant: Formulated to minimise fouling, which is particularly relevant in suppressed firearms where carbon build-up in the suppressor and action accumulates faster than in unsuppressed setups.
• Quality Control: Part of Magtech's First Defense Tactical line, manufactured to strict tolerances for consistent pressure, velocity, and accuracy across every round in the box.
• Rounds Per Box: 50 rounds per box.

For licensed shooters running a suppressed .300 Blackout rifle for hunting, pest control, or range work, this Magtech subsonic load is a well-specified, reliable option that makes the most of your suppressor. The combination of a heavy 200gr FMJ, proven brass casings, and Magtech's consistent manufacturing standards makes it a straightforward choice for any shooter looking to get the most out of a suppressed .300 Blackout platform.